Of course, the most obvious answer is that European immigrants who came to America brought with them their customs. One of those customs was the Celtic Samhain (pronounced Sow-en) celebrating the dead, which they were exposed to, and continued to celebrate because of their superstitious nature. The day recognized was October 31.
The early colonial Protestant communities restricted the practice due to its association with the occult, and its malicious nature, but it spread to other communities nonetheless, eventually becoming popular as a community event.
As with other pagan beliefs, the Roman Catholic Church adopted the non-biblical concept of the Samhain into the Church and celebrated on November 1 the honoring of dead saints, calling it All Saints Day. That made the night before, "All Hallows Eve," later dubbed "Halloween."
The religious rituals that the Celtic pagans practiced were secularized and made into fun games for the sake of the celebration. Eventually, more and more people were desensitized to its pagan nature and just had fun with it instead.
It also gave an excuse for bad-natured children to act out that night with pranks, vandalism, and even physical assaults. In early pagan times it was believed that doing so was an appeasement to the evil spirits roaming on that night, which is origin for the phrase, "Trick or treat."
For more articles on the subject and on many more topics, see the website:
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The Irish
The English and Irish brought Halloween to America.
European immigrants brought the celebration of Halloween to America.
Irish and English immigrants brought the tradition of Halloween to America in the mid 1800s.
Ancient Celtic druids were practicing a rudimentory form of Halloween more than 1,500 years ago. The Irish brought the holiday over with them when they settled in North America.
•Irish and English immigrants brought the tradition of Halloween to America in the mid 1800s.
He brought grapes and timber from North America.
Wolves are native to North America.
ASH: by north america
England.
The europeans
Earthworms are an invasive species in North America. They were brought in 10,000 years ago by glaciation and some brought in by Europeans during colonization.
Native and African slaves brought it to Asia??????